annotate docs/spec/track.tikz @ 636:9cda689dcc20

Use an appropriate data copier for the platform's bit width

Dispatch on sb-vm:n-word-bits, though I think sbcl itself should
probably define a system-area-double-float-copy bit-bash function.

This also fixes a thinko, where only half of the times data was being
copied, even on 64-bit platforms.  Sheesh.  Fixes #32

\draw[thick] (-2.5,-0.2) rectangle (2.5,0.2);
\draw plot[domain=-2.4:2.4,samples=250] (\x, {0.15*sin(9.2*\x r)});